Getting image to stretch a div

In the markup after the image, insert something like <div style="clear:left"/>. A bit messy, but it's the easiest way I've found.

And while you're at it, put a bit of margin on that image so the text doesn't butt up against it.

Assuming @John Millikin is correct, the code

.product + * { clear: left; }

would suffice to do the same thing without forcing you to manually adjust the code after the div.

Add overflow:auto; to .product1